html{
	
}
#canvas {
	position: fixed;
        height：100%；
        width: 100%;
	top: 0;
	left: 0;
	z-index: -1;
       opacity: 1;
}
body{
    margin: auto;
    font: 12px black verdana;
    line-height: 1.5;
    color: #999;
    background: #171716 url('https://pic.netbian.com/uploads/allimg/170610/174855-1497088135bff2.jpg') no-repeat right top;
    font-family: 'PingFang SC','Microsoft YaHei','Helvetica Neue','Helvetica','Arial',sans-serif;
    background:#171716;
}
#leftcontentcontainer{
   background: #171716;
   margin-top: 8px;
   padding: 8px;
}